Electric Force vector components

What is the force F on the 1 nC charge at the bottom?
Write your answer as two vector components, separated by a comma. Express each component numerically, in newtons, to three significant figures.

2. Relevant equations
F = kq1q2 / r^2
a^2 + b^2 = c^2
Sine Law

3. The attempt at a solution
As a reference, the "focus" charge is the 1nC at the bottom.
Note that this appears to be a semicircle. Due to this fact, I conclude that the distance between the focus charge and the -6nC is also 5cm.

Because both 2nC charges have the same charge, distance, and angle with respect to the origin (Focus), I conclude that they cancel each other out along the X axis. They will both push the focus downwards, however there should be no X axis movement. Since the -6nC charge is along the Y axis, I conclude that this charge will not affect the focus' net X force either.